xo.org - robtex.com
xo.org
| DNSSEC | ⚠️ Not signed | ||||||
| NS | nameserver.concentric.net ⚠️ Not in zone NS records | ||||||
| A | 156.154.64.25🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar | ||||||
| PTR | ns1.hostingsvcs.com | ||||||
| NS | nameserver1.concentric.net ⚠️ Not in zone NS records | ||||||
| A | 156.154.65.25🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar | ||||||
| PTR | ns2.hostingsvcs.com | ||||||
| NS | nameserver2.concentric.net ⚠️ Not in zone NS records | ||||||
| A | 156.154.66.25🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar | ||||||
| PTR | ns3.hostingsvcs.com | ||||||
| NS | nameserver3.concentric.net ⚠️ Not in zone NS records | ||||||
| A | 156.154.67.25🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar | ||||||
| PTR | ns4.hostingsvcs.com | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1778752901 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSnameserver.concentric.net2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 10:35:56
●NSnameserver1.concentric.net2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 10:35:56
●NSnameserver2.concentric.net2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 10:35:56
●NSnameserver3.concentric.net2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 10:35:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| xo.org | nameserver.concentric.net, nameserver1.concentric.net, nameserver2.concentric.net, nameserver3.concentric.net | - |
✅ Authoritative Response
Server:156.154.64.25
NS records: nameserver.concentric.net, nameserver1.concentric.net, nameserver2.concentric.net, nameserver3.concentric.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for xo.org (unsigned zone)
⏱️ Timing
Total: 1166ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
xo.org is delegated to four name servers: nameserver1.concentric.net, nameserver2.concentric.net, nameserver3.concentric.net and nameserver.concentric.net.
xo.org at least partially shares its name servers with other domains, for instance inthosts.net, 168mail.net, phillyshipyard.com, 21.220.205.in-addr.arpa and northshoretahoe.com.
These name servers are commonly used together with seatimes.seatimes.com, ns1.xo.com, ns2.xo.com, auth01.ns.uu.net, edns5.ultradns.biz, edns5.ultradns.com, edns5.ultradns.net and edns5.ultradns.org.
Host names with one IP number: nameserver1.concentric.net points to 156.154.65.25; nameserver2.concentric.net points to 156.154.66.25; nameserver3.concentric.net points to 156.154.67.25; nameserver.concentric.net points to 156.154.64.25.